Wagon-brake



{No Model.)

P. S. CBISWELL.

WAGON BRAKE.

No. 437,916. Patented Oct. '7, 1890.

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PETER SHIMER CRISWVELL, OF WHEELING, WEST VIRGINIA.

WAGON-BRAKE.

SPECIFICATION forming part of Letters Patent No. 437,916, dated October 7, 1890.

Application filed June 20, 1890. Serial No. 3561 L (N 11105619 To all whom it may concern.-

Be it known that 1, PETER SHIMER CRIS- WELL, a citizen of the United States, residing at Wheeling, in the county of Ohio and State of WVest Virginia, have invented certain new and useful Improvements in WVagon-Brakes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to that class of wagonbrakes in which the wagon-body slides forward by gravity when the vehicle is on a declivity, so as to put on the brakes.

The invention will first be described in connection with the drawings, and then pointed out in the claim.

Figure 1 of the drawings is a bottom plan View of a wagon with my brake; Fig. 2, a longitudinal vertical section through the middle, and Fig. 3 a detail vertical section.

In the drawings, A represents the bottom of the wagon-body, to which is attached the front cross-piece B, the rear cross-piece O, the cross-bar D, and the bearings E E.

On the front cross-pieceB is fastened at its middle the trough b b, in which are journaled the friction-rolls b, which extend below thetrough sides 19 b On the rear cross-piece are arranged two similar troughs c c, carrying rolls 0 0, one on each side. These rollertroughs are overlapped by troughs b 0 0 attached to the under side of the vehiclesprings F, the rollers Z) 0 bearing upon the bottom of the troughs b 0 The rear axle and front bolster being attached to the springs, the body of the wagon will on a decline slide forward, being limited in extent by the rear closed ends 12 0 It is this movement which I employ to put on the brakes.

In the bearings E E, I arrange the rotary or oscillating shaft G, which has the four crank-arms g g and g g, the former being provided with horizontal ends, which carry the brake-shoes H H, while the latter g 9 have their ends connected by a rope or chain with the cross-bar D on the bottom of the wagonbody. The flexible connection D passes intermediately over pulleys rotating on the frames I I, attached to the rear axle J. These pulleys K K do not run in a plane parallel to the longitudinal axial line of the vehicle, but obliquely thereto, so that the ropes may not contact with the springs. As the body of the wagon moves forward, the crankshaft is turned so as to put the brakes on the wheels, while as soon as a level or upward incline is reached the running-gear is pulled forward under the weight of the wagon-body, so as to take the brakes off the wheels.

hat I claim as new, and desire to protect by Letters Patent, is-

In a wagon-brake, the arms 9' g, connected with the bottom of the wagon-body by ropes passing over pulleys on the axle, combined fixedly with a crankshaft G, which is journaled on the bottom of said body, as and for the purpose set forth.

In testimony whereof I afiix my signature in presence of two witnesses.

PETER SHIMER CRISVVELL.

\Vitnesses:

FRANK FARIs, T. M. GARVIN. 

